My main area of research is on social cognitive deficits in autistic spectrum disorders (ASD). I am interested in the development of joint attention and social communication in ASD. Our research group has recently been investigating the perception of motion (including biological motion) in ASD and the extent to which young children with ASD preferentially orient towards biological motion. We have also been investigating the perception of pointing and other joint attention behaviours. Another area of research is on selective attention and perceptual load in ASD; our studies highlight some of the strengths as well as specific weaknesses in ASD. We are also investigating the perception of sign language in deaf children with ASD.